im sure if the switched its because its who ever could give them a better deal in pricing also its feee advertising for who ever they use so its smart bussiness
I am not sure they have changed so to speak entirely but I have noticed they do use Beckett more so now but they also still deal mostly with PSA from my observations.
They use both. They also continue to use Roger for music and I have been authenticating space and aviation for them since 2011. Nothing has really changed except they have started using BAS in some cases where they may have used PSA in the past.